FKIE_CVE-2019-16905

Vulnerability from fkie_nvd - Published: 2019-10-09 20:15 - Updated: 2026-10-14 07:16
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.
References
cve@mitre.orghttps://bugzilla.suse.com/show_bug.cgi?id=1153537Issue Tracking, Third Party Advisory
cve@mitre.orghttps://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdfThird Party Advisory
cve@mitre.orghttps://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.cRelease Notes, Vendor Advisory
cve@mitre.orghttps://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=hPatch
cve@mitre.orghttps://security.gentoo.org/glsa/201911-01Third Party Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20191024-0003/Third Party Advisory
cve@mitre.orghttps://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflowExploit, Third Party Advisory
cve@mitre.orghttps://www.openssh.com/releasenotes.htmlRelease Notes
cve@mitre.orghttps://www.openwall.com/lists/oss-security/2019/10/09/1Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.suse.com/show_bug.cgi?id=1153537Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdfThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.cRelease Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=hPatch
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201911-01Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20191024-0003/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflowExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.openssh.com/releasenotes.htmlRelease Notes
af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/oss-security/2019/10/09/1Mailing List, Third Party Advisory
0b142b55-0307-4c5a-b3c9-f314f3fb7c5ehttps://cert-portal.siemens.com/productcert/html/ssa-398330.html
0b142b55-0307-4c5a-b3c9-f314f3fb7c5ehttps://cert-portal.siemens.com/productcert/html/ssa-412672.html
Impacted products
Vendor Product Version
openbsd openssh *
openbsd openssh *
netapp cloud_backup -
netapp steelstore_cloud_integrated_storage -
siemens scalance_x204rna_firmware *
siemens scalance_x204rna -
siemens scalance_x204rna_ecc_firmware *
siemens scalance_x204rna_ecc -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    },
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "V3.1.5",
              "status": "affected",
              "version": "V3.1.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "V3.1.5",
              "status": "affected",
              "version": "V3.1.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "V3.1.5",
              "status": "affected",
              "version": "V3.1.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "V3.1.5",
              "status": "affected",
              "version": "V3.1.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "V3.1.5",
              "status": "affected",
              "version": "V3.1.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
    }
  ],
  "configurations": [
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        {
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              "matchCriteriaId": "4419F9A7-C91A-49F3-8424-0FC679147627",
              "versionEndIncluding": "7.9",
              "versionStartIncluding": "7.7",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "7EDB383B-BB44-4FEA-917B-1BA5279DB478",
              "versionEndExcluding": "8.1",
              "versionStartIncluding": "8.0",
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            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
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              "vulnerable": true
            },
            {
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              "matchCriteriaId": "E94F7F59-1785-493F-91A7-5F5EA5E87E4D",
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      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
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              "versionEndExcluding": "3.2.7",
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          ],
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      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH."
    },
    {
      "lang": "es",
      "value": "OpenSSH 7.7 a 7.9 y 8.x anterior de la versi\u00f3n  8.1, cuando se compila con un tipo de clave experimental, tiene un desbordamiento de entero de identificaci\u00f3n  previa si un cliente o servidor est\u00e1 configurado para usar una clave XMSS especialmente dise\u00f1ada. Esto conduce a la corrupci\u00f3n de la memoria y la ejecuci\u00f3n del c\u00f3digo local debido a un error en el algoritmo de an\u00e1lisis de claves XMSS. NOTA: la implementaci\u00f3n de XMSS se considera experimental en todas las versiones de OpenSSH lanzadas, y no hay una forma compatible para habilitarla al crear OpenSSH port\u00e1til."
    }
  ],
  "id": "CVE-2019-16905",
  "lastModified": "2026-10-14T07:16:48.583",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.4,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.4,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2019-10-09T20:15:23.503",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "url": "https://bugzilla.suse.com/show_bug.cgi?id=1153537"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      ],
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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        "Vendor Advisory"
      ],
      "url": "https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch"
      ],
      "url": "https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5\u0026r2=1.6\u0026f=h"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      "url": "https://security.gentoo.org/glsa/201911-01"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      ],
      "url": "https://security.netapp.com/advisory/ntap-20191024-0003/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      ],
      "url": "https://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflow"
    },
    {
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    },
    {
      "source": "cve@mitre.org",
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    },
    {
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    },
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    },
    {
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      "tags": [
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      "url": "https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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      "url": "https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5\u0026r2=1.6\u0026f=h"
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      "url": "https://security.netapp.com/advisory/ntap-20191024-0003/"
    },
    {
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    },
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    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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